Meticulous editing redone inserting line (8)
I believe the answer is:
diligent
'meticulous' is the definition.
(I've seen this before)
'editing redone inserting line' is the wordplay.
I cannot really understand how this works, but
'line' could be 'l' (used when specifying particular lines from a poem) and 'l' is located in the answer.
an anagram of 'editing' is 'diigent' which is present in the left over letters.
This accounts for all the letters.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for diligent that I've seen before include "Painstaking - I tingled (anag)" , "Thorough" , "Industrious" , "I tingled, being hard-working and meticulous" , "Steady in application and industry" .)